Burr is one of the common phenomena in laser cutting machine processing, and it is also the two unsolved problems “burr generation and control” in the theoretical research of metal cutting so far.
Burr directly affects the dimensional accuracy, shape and position accuracy and surface roughness of the machined workpiece.
Today, let’s talk about the common causes and solutions of burrs in the process of laser cutting.
Causes and solutions of burrs in laser cutting.
Cause 1:
There is a deviation between the upper and lower positions of the laser beam focus generated by the laser cutting machine, resulting in that the energy does not converge on the workpiece exactly, and the workpiece is not fully vaporized, which increases the amount of molten slag and is not easy to blow off, so it is easier to produce burrs.
Solution：
Adjust the position of the laser beam focus to the best state according to the offset position.
Cause 2:
The output power of the laser cutting machine is not enough, and the metal cannot be vaporized effectively, resulting in excessive slag and burrs.
Solution：
Check whether the laser cutting machine works normally.
If not, it needs to be repaired and maintained in time; If normal, check whether the output value is correct.
Cause 3:
The cutting line speed of the laser cutting machine is too slow, which destroys the surface quality of the cutting surface and produces burrs.
Solution:
Adjust and improve the cutting line speed in time to make it reach the normal value.
Cause 4:
The purity of the auxiliary gas of the laser cutting machine does not meet the required standard, which will also cause burrs on the workpiece.
Solution：
Replace the auxiliary gas with higher purity.
Cause 5:
The working time of laser cutting machine is too long, which makes the equipment in an unstable working state, which will also lead to the generation of burrs.
Solution：
Turn off the laser cutting machine and restart it after a period of time, so that it can have a full rest.
